Question

Which option correctly describes the pattern of reactivity and electronegativity in nonmetals?(1 point)
Responses

Both reactivity and electronegativity decrease up a group.
Both reactivity and electronegativity decrease up a group.

Reactivity increases down a group, and electronegativity decreases down a group.
Reactivity increases down a group, and electronegativity decreases down a group.

Both reactivity and electronegativity decrease down a group.
Both reactivity and electronegativity decrease down a group.

Reactivity decreases down a group, and electronegativity increases down a group.

Answer 1

Both reactivity and electronegativity decrease down a group.

Explanation: In nonmetals (e.g., halogens) atoms at the top of a group are smaller and attract electrons more strongly (higher electronegativity) and are more reactive. As you go down the group atomic size increases, electronegativity and tendency to gain electrons (reactivity) both decrease.